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CVE-2026-4661— WP CTA <= 2.2.2 - Unauthenticated Time-Based Blind SQL Injection via 'fildname' Parameter

Quick assessment

Affected
blendmedia WP CTA – Call Now Button, Sticky Button & Call to Action Builder
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress WP CTA是WordPress基金会的一款功能强大且易于使用的插件。 WordPress WP CTA 2.2.2及之前版本存在SQL注入漏洞，该漏洞源于ajaxCheck()方法中对用户提供的列名转义不足且$wpdb->update()调用缺乏准备语句，且完全缺少授权检查，端点注册为未认证用户可访问，可能导致未认证攻击者通过时间盲注SQL注入技术注入任意SQL查询并提取敏感信息，包括管理员密码哈希。

CVSS 7.5 · High EPSS 0.51% · P42

Affected Version Matrix 1

VendorProduct Version RangeStatus
blendmedia WP CTA – Call Now Button, Sticky Button & Call to Action Builder ≤ 2.2.2 affected
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I. Basic Information for CVE-2026-4661

Vulnerability Information
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Vulnerability Title
WP CTA <= 2.2.2 - Unauthenticated Time-Based Blind SQL Injection via 'fildname' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The WP CTA – Sticky CTA Builder, Generate Leads, Promote Sales plugin for WordPress is vulnerable to time-based blind SQL Injection via the 'fildname' parameter in all versions up to, and including, 2.2.2. This is due to insufficient escaping of user-supplied column names in the ajaxCheck() method and lack of preparation in the $wpdb->update() call. The vulnerability is compounded by the complete absence of authorization checks and the endpoint being registered for unauthenticated users via wp_ajax_nopriv_. This makes it possible for unauthenticated attackers to inject arbitrary SQL queries and extract sensitive information from the database via time-based blind SQL injection techniques, including administrator password hashes.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress WP CTA SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress WP CTA是WordPress基金会的一款功能强大且易于使用的插件。 WordPress WP CTA 2.2.2及之前版本存在SQL注入漏洞，该漏洞源于ajaxCheck()方法中对用户提供的列名转义不足且$wpdb->update()调用缺乏准备语句，且完全缺少授权检查，端点注册为未认证用户可访问，可能导致未认证攻击者通过时间盲注SQL注入技术注入任意SQL查询并提取敏感信息，包括管理员密码哈希。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
blendmedia WP CTA – Call Now Button, Sticky Button & Call to Action Builder 0 ~ 2.2.2 -

II. Public POCs for CVE-2026-4661

# POC Description Source Link Shenlong Link
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default-local-qwen3.6 · 9975 chars
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III. Intelligence Information for CVE-2026-4661

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Patches & Fixes for CVE-2026-4661 (2)

News Coverage for CVE-2026-4661 (1)

Other References for CVE-2026-4661 (1)

IV. Related Vulnerabilities

Same product: WP CTA – Call Now Button, Sticky Button & Call to Action Builder
Same vendor: blendmedia
Same weakness: CWE-89

V. Comments for CVE-2026-4661

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